Cyclone® devices support differential I/O standards, such as LVDS and reduced swing differential signaling (RSDS), as well as single-ended I/O standards, such as LVTTL, LVCMOS, SSTL, and PCI, commonly used for interfacing with other devices on the board.
Differential I/O Standards in Cyclone Devices
Cyclone devices provide support for LVDS and RSDS on up to 129 channels. Cyclone devices can interface with LVDS signals using differential LVDS buffers capable of data transfer rates as high as 640 megabits per second (Mbps). The LVDS buffers in Cyclone devices maintain signal integrity, provide low electromagnetic interference (EMI), and consume less power compared to single-ended I/O standards. Figure 1 shows the LVDS interface in Cyclone devices.